This is the horrific moment four people were killed when a bus driver accused of being asleep at the wheel piled into four cars backed up on a motorway.
Footage of the crash in Yeongdong, South Korea, shows vehicles being shunted aside when the out-of-control bus careens into them.
Four people were killed in the crash, while another 37 were wounded.
Police said they were investigating whether the driver had fallen asleep or was using a mobile phone at the time - accusations the driver denied, joongboo.com reported.
Posted By Abdul